If you value your time, you'd be better off replacing these pedals. None of the techniques described is anywhere close to being guaranteed to succeed, and that would be AFTER spending a lot of time. If you want to replace the pedals with the exact model, just wait and watch ebay and craigslist. Use google alerts to do the watching for you.

One nice thing about these pedals is that they were made to last. They lasted, and now they're done. Fixing them up to last doesn't make sense, since they're dead now. The supposed durability has been spent. It's gone.